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#
# Precedence:
#
# - The FORCE_FFI_YAJL env var takes precedence over everything else, the user theoretically knows best
# - Java always gets ffi because jruby only supports ffi
# - There is a conflict between loading libyajl 1.x and 2.x in the same VM process (on a fundamental basis,
# simply guru medidate about how the c-symbols work if you load both libs). For some reason the ffi
# interface seems to work fine sometimes (i'm not sure how) so we fall back to that -- this is much more
# likely to be converted into a raise than to have the warn dropped, so don't bother asking for that.
# - Then we try the c-ext and rescue into ffi that fails
#
if ENV['FORCE_FFI_YAJL'] == "ext"
require 'ffi_yajl/ext'
elsif ENV['FORCE_FFI_YAJL'] == "ffi"
require 'ffi_yajl/ffi'
elsif RUBY_PLATFORM == "java"
require 'ffi_yajl/ffi'
elsif defined?(Yajl)
warn "the ffi-yajl and yajl-ruby gems have incompatible C libyajl libs and should not be loaded in the same Ruby VM"
warn "falling back to ffi which might work (or might not, no promises)"
require 'ffi_yajl/ffi'
else
begin
require 'ffi_yajl/ext'
rescue LoadError
warn "failed to load the ffi-yajl c-extension, falling back to ffi interface"
require 'ffi_yajl/ffi'
end
end
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